<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>身体质量指数BMI测试</h1>
<form action="/bmi"></form>
<input type="text" name="height" placeholder="身高(米)">
<input type="text" name="weight" placeholder="体重(公斤)">
<input type="submit" >
</body>
</html>